-- She claims they banged in Minn. around 8/10/2012 -- She claims she didn't bang any other dude 6 weeks before OR after that date. -- She gave birth to the kid just about 9 months later.

Now, Ning wants Royce to PAY UP -- which might be difficult, considering he's got no job after recently being dumped by the 76ers AND the Houston Rockets following a string of issues related to his mental health problems.

Ning is asking for unspecified child support and full legal and physical custody of the baby boy. She also wants Royce to have "no parenting time" with the kid.